122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/* base class for various operations on bands
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifndef VIPS__BANDARY_H
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#define VIPS__BANDARY_H
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#ifdef __cplusplus
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extern "C" {
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#endif /*__cplusplus*/
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#include "pconversion.h"
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#define VIPS_TYPE_BANDARY (vips_bandary_get_type())
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#define VIPS_BANDARY( obj ) \
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(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
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VIPS_TYPE_BANDARY, VipsBandary ))
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#define VIPS_BANDARY_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_CAST( (klass), \
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VIPS_TYPE_BANDARY, VipsBandaryClass))
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#define VIPS_IS_BANDARY( obj ) \
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(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_BANDARY ))
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#define VIPS_IS_BANDARY_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_BANDARY ))
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#define VIPS_BANDARY_GET_CLASS( obj ) \
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(G_TYPE_INSTANCE_GET_CLASS( (obj), \
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VIPS_TYPE_BANDARY, VipsBandaryClass ))
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struct _VipsBandary;
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/* Our sequence value.
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*/
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typedef struct {
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struct _VipsBandary *bandary;
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/* Set of input regions.
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*/
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VipsRegion **ir;
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/* For each input, an input pointer.
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*/
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VipsPel **p;
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/* A memory area large enough to hold one pixel from each input image.
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*/
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VipsPel *pixels;
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} VipsBandarySequence;
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typedef void (*VipsBandaryProcessFn)( VipsBandarySequence *seq,
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VipsPel *out, VipsPel **in, int width );
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typedef struct _VipsBandary {
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VipsConversion parent_instance;
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/* Array of input arguments, set these from a subclass.
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*/
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VipsImage **in;
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int n;
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/* The number of output bands. For example, VipsBandjoin sets the sum
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* of the bands in the input images.
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*/
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int out_bands;
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/* The input images, ready for the operation.
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*/
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VipsImage **ready;
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} VipsBandary;
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typedef struct _VipsBandaryClass {
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VipsConversionClass parent_class;
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/* The buffer processor.
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*/
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VipsBandaryProcessFn process_line;
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/* For each input format, what output format. Leave NULL for output
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* format == input format.
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*/
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const VipsBandFormat *format_table;
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} VipsBandaryClass;
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GType vips_bandary_get_type( void );
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int vips_bandary_copy( VipsBandary *bandary );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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#endif /*VIPS__BANDARY_H*/
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